Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 10

Sanskrit:

तस्मिन्नहं समभवमण्डे सलिलसंस्थितौ ।मम नाभ्यामभूत् पद्मं विश्वाख्यं तत्र चात्मभूः ॥ १० ॥

ITRANS:

tasminn ahaṁ samabhavamaṇḍe salila-saṁsthitaumama nābhyām abhūt padmaṁviśvākhyaṁ tatra cātma-bhūḥ

Translation:

I Myself appeared within that egg, which was floating on the causal water, and from My navel arose the universal lotus, the birthplace of self-born Brahmā.

Purport:

The Supreme Lord here describes His appearance in His transcendental pastime form of Śrī Nārāyaṇa. Lord Nārāyaṇa enters within the universe but does not give up His purely transcendental body of knowledge and bliss. Lord Brahmā, however, born from the Lord’s navel lotus, has a material body. Although Lord Brahmā is the most powerful mystic, his body, which pervades all material existence, is material, whereas the body of the Supreme Lord Hari, Nārāyaṇa, is always transcendental.